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Optoelectronic device and method of producing an optoelectronic device

Pending Publication Date: 2022-11-10
AMS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The optoelectronic device described in this patent has an optical filter that absorbs unwanted electromagnetic radiation and prevents or reduces reflection on the surface of the device. This optical filter is electrically conductive and in electrical contact with the contact area, providing a shielding from EMI and a protection from ESD. By electrically connecting the optical filter to a fixed constant potential via the contact area, the device is protected from ESD damage. The technical effect of this approach is a more robust and reliable optoelectronic device that can withstand environmental stresses and protect against damage.

Problems solved by technology

Electric components may produce electromagnetic fields, which possibly cause electromagnetic interference (EMI).
This, in turn could cause degradation of individual devices and deterioration of the system performance.
Furthermore, each electronic device is prone to damages caused by electrostatic discharge

Method used

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  • Optoelectronic device and method of producing an optoelectronic device
  • Optoelectronic device and method of producing an optoelectronic device
  • Optoelectronic device and method of producing an optoelectronic device

Examples

Experimental program
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Embodiment Construction

[0062]In FIG. 1a a cross-sectional view of an example for an optoelectronic device 1, which is no embodiment, is shown. The feature to be highlighted here is an optical filter 13, which covers a portion of a top surface 6 of a dielectric layer 5 and a portion of an optical element 12. The optical filter 13 does not cover a bottom part 14, the sidewalls 15 and the edges 16 of an opening 11 at the top surface 6 of the dielectric layer 5. Thus, the optical filter 13 is not electrically connected to a fixed electrical potential. Thus, the optical filter 13 cannot provide EMI-shielding or ESD-protection.

[0063]With FIG. 1b a top-view of the example for an optoelectronic device 1 given in FIG. 1a is shown. The optical filter 13 is spaced from the contact area 9. Thus, it becomes clear that the optical filter 13 does cover the contact area 9.

[0064]FIG. 2a shows a cross-sectional view of one exemplary embodiment of the optoelectronic device 1. Elements according to FIG. 2a that correspond to...

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PUM

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Abstract

An optoelectronic device comprises a substrate with a photosensitive structure, a dielectric layer on a main surface of the substrate, the dielectric layer having a top surface facing away from the substrate. At least one wiring layer is arranged in the dielectric layer in places and at least one contact area is formed by a portion of the at least one wiring layer. An opening is formed at the top surface of the dielectric layer, the opening extending towards the contact area. An optical element is arranged on the top surface of the dielectric layer above the photosensitive structure and an optical filter is arranged on the top surface of the dielectric layer, the optical filter being electrically conductive, covering a portion of the optical element and being in electrical contact with the contact area. Furthermore, a method for producing an optoelectronic device is provided.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is the national stage entry of International Patent Application No. PCT / EP2020 / 070541, filed on Jul. 21, 2020, and published as WO 2021 / 028164 A1 on Feb. 18, 2021, which claims the benefit of priority of European Patent Application No. 19191268.2, filed on Aug. 12, 2019, all of which are incorporated by reference herein in their entirety.FIELD OF THE INVENTION[0002]The present application relates to an optoelectronic device and a method for producing an optoelectronic device.BACKGROUND OF THE INVENTION[0003]Many optoelectronic devices are suitable to detect electromagnetic radiation in a certain wavelength range. In order to prevent leakage of electromagnetic radiation and crosstalk between individual photosensitive structures within an optoelectronic device, frequently a certain area of the senor chip is covered by an optical filter. The optical filter is provided to absorb unwanted electromagnetic radiation at pl...

Claims

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Application Information

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IPC IPC(8): H01L27/146G02B1/116
CPCH01L27/14621H01L27/14625G02B1/116H01L27/14623H01L31/0203H01L31/02164
Inventor PERTL, PATRIKEILMSTEINER, GERHARD
Owner AMS AG